Geographic Information System Workshop: Spain and Canary Islands Collections
Explore georeferencing techniques with GIS layers for Spain and Canary Islands, including country, provinces, counties, and localities. Learn about database collections and geographic centroids.
Geographic Information System Workshop: Spain and Canary Islands Collections
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Presentation Transcript
Pablo Sastre Olmos HerpNet/GBIF Georeferencing Workshop 2006 Georepresenting
Spain / Europe GIS Layer “Country-polygon”: Num. / Cont-Ocea / Country Europe / Spain Collection Database: Num. / Sps / … /Cont-Ocea /Country
Canary Islands / Spain / Africa GIS Layer “Archipielago-circle”: Num. / Archipielago Africa / Spain / Canary Islands Collection Database: Num. / Sps / … / Cont-Ocea / Country / Archipielago
Extent Madrid / Spain GIS Layer “Provinces-Spain-polygon”: Num. / State-Province Spain /Madrid Collection Database: Num. / Sps / … / Country / State-Province
Uncertainity Madrid / Spain GIS Layer “Provinces-Spain-polygon”: Num. / State-Province (=Madrid) GIS Functions / Distance operators / Buffer
Triturus pygmaeus Patella ferruginea
Named places - County Muros / A Coruña / Galicia Tres Cantos / Madrid A Coruña / GIS Layer “Counties-Spain-polygon”:Num. / County Madrid / Muros Tres Cantos Collection Database: Num. / Sps / … / State-Province / County
Madrid / Counties Genus Parus Forest Genus Circus Agriculture Birds Colection – Spanish Museum of Natural Sciences (MNCN-CSIC)
Circles or Squares ? Tres Cantos / Madrid GIS Layer “Counties-Spain-UTMx10”: Num. / UTMx10/ County Madrid / Tres Cantos Collection Database: Num. / Sps / … / State-Province / County
GIS Layer “Counties-Spain-GeometricPoint”: Num. / … / State-Province /County Collection Database: A Coruña / Muros Num. / Sps / … / State-Province / County ... or Points ? Muros / A Coruña / Galicia / Spain Urban centre (coordinates of the main city centre) Centroid (average polygon coordinates) Geometric centre (coordinates of the furthest point from polygon border)
Named places - Specific locality Louro / Muros / A Coruña / Galicia / Spain Thiessen polygons (Voronoi) A Coruña / Muros / Louro Localities nearby Closer to Louro Generalization Muros county GIS Layer “DetailedLocalities”: Num. / Locality Collection Database: Num. / Sps / ... / Cont-Ocea / ... / Locality
Offsets 5 Km North from Muros (Muros / A Coruña / Galicia / Spain) Muros county Distance 5 Km (±0.5) from Muros 5 Km North from Muros Aspect Generalization North from Muros GIS Layer “Offsets”: Num. / Offset Collection Database: Num. / Sps / ... / Cont-Ocea / ... / Offset